Mine-car frame.



PATENTED DEC. 8; 19.03. J. E. JONES. MINE GAR FRAME. APPLIQATIONPILEDSEPT. 12, 1903.

10 MODEL.

mac.

THE Nonms UNITED STATES Fatnted December 8, 1903.

. PATENT OFFICE.

MINE-CAR FRAME.

SPECIFICATION forming part of Letters Patent N 0. 746,092, datedDecember 8, 1903.

Application filed September 12, 1903. Serial No. 172,905. (1% model.)

To all whom it may concern.-

Be it known that 1, JAMES E. Jones, a citizen of the United States,residing at Scranton, in the county of Lackawanna and State ofPennsylvania, have invented certain new and useful Improvements inMine-Car Frames, of which the following is a specification.

This invention relates to the frames of cars,

such as are in use about mining and eXcavat-' ing operations; and theobjects of the invention are to improve the draw-head attachments tosuch cars, to economize in the material used in the constructionthereof, to simplify and strengthen such car-frames generally.

To these ends the invention consists of the arrangement, construction,and combination of parts, as are herein specified, and more particularlypointed out in the claims.

Referring to the drawings, Figure 1 shows a top plan view of that partof the mine-car frame which embodiesmy invention. Fig. 2 is an edge viewof the same with parts broken away to more particularly show thedetails. Fig. 3 is a front end view of the frame shown in Fig. 1. Fig.iis a detail view showing the plate on which rests the end of the springof one of. the draw-heads.

Similar characters of reference denote like and corresponding partsthroughout the several views.

In the drawings,l and 2 denote longitudinal timbers used in constructinga mine-car frame embodying my invention. The timbers 1 and 2 areconnected by cross-timbers 3 3, 4 4, and 5. The ends of 3 3 are cut intocountersunk notches 6 6, &c., which run laterally across the inner sidesof the timbers 1 and 2, respectively. The ends of the timbers 4t 4 and 5likewise set into mortises 7 7, &c., which run only partially across thetimbers 1 and 2,so that the ends of the said cross-timbers are supportedby a flange 8 0n the timbers 1 and 2, respectively. Arranged parallelwith the main timbers l and 2 and between the cross-timbers 3 and 4. areshort struts 9 and 9', between which is disposed the draw-head 10. Thestruts 9 and 9' are secured into position by the cross-rod 11, which rodalso passes through the timbers 1 and 2, which is used for drawing theframework together by means of nuts 12 12. Similar struts 13 13 arearranged between the timbers 3' and 4', and disposed between them is thedraw-head 14. The said struts 13 13' are held by the cross-rod 11,secured in a similar manner as rod l1.- Other cross-rodsyas 15, mayserve to make the frame more staunch. Disposed againstf the outer sidesof the struts 9 9 and 13 13 arelongitudinal rods 16 16, which passthrough all the cross-timbers of the frame and a'lso through end plates17 and 17, the ends of said rods being secured by nuts 12 12, &c. Froman underside cornerof the longitudinal timbers 1 and 2 a triangularpiece-l8 18, &c., is sawed ofi on the line 19 19, 850. One of thesepieces is placed at each exterior corner of the frame in such a'mannerthat the hypotenuse thereof is faced with a section of the end plates l717 when the same are bent and bolted into the positionsas shown in thedrawings. The draw-heads 10 and 14,

respectively, have each a shaft extending through holes in thecross-timbers 3 4 and 3' 4', respectively, on the inner end of whichshafts are arranged coiled springs 20 20', respectively, arranged torest against shieldplates 21 21, respectively, which are secured to thetimbers 4 4:, respectively, the said springs being capable of adjustmentby means of screw-threaded nuts 22 22, respectively.

In using the car-framethus described it should be noted that pressure ofthe draw head being first exerted on the cross-timbers 4 4 istransmitted through the struts 9 9 and 13 13 to the cross-timbers 3 3,which in their turn are sustained by the longitudinal rods 16 16,runningthe entire length of the frame 1. The herein-described mine-carframe,

comprising a pair of longitudinal timbers; two pairs-of cross-timbersjoining said longitudinal timbers, and each pair of said cross-timbersseparated bya pair of struts; draw-heads disposed between the struts ofeach pair; end plates through which said draw-heads extend, and the endsof said end plates recurved over and secured to the ends of thelongitudinal timbers aforesaid together with cross-bolts holding theframework together; longitudinal bolts extending through the end platesaforesaid, parallel with the draw-heads and longitudinal timbers,aforesaid, substantially as specified.

2. In a mine-car frame the combination of apair of longitudinal sidetimbers joined with a pair of cross-timbers at each end, an end platefacing the outer end timber on each end, and the ends of each of saidplates being recurved and encompassing the ends of the loogitudinaltimbers aforesaid, longitudinal rods extending through the frame andthrough the end plates aforesaid, together with a drawhead extendingthrough each end pair of 20 cross-timbers aforesaid, and a pair ofstruts separating each of said pairs of cross-timbers, and one of thedraw-heads disposed between each pair of struts, substantially asspecified.

Intestimony whereof I aflix my signature 25

